64 SALMONID.E. 



b. Salmo fario ausonii. 



Synonymy of Oerman specimens. 



Forelle. 



Trutta fluviatilis, Gesner, p. 1203. 



Salmo no. 367, Gronov. Zoopki/l. p. 120; no. 370, p. 121 (young). 



Trutta no. 9, A7em, Pise. Miss. v. p. 19, tab. 1. fig. 3. 



Salmo fario, Moch, i. p. 148, taf. 22, & p. 157, taf. 23; Schrank, 



Faun. Boic. i. p. 320 ; Meiditigei; pi. 20 ; At/ass. Poiss. d'eau douce, 



pi. 3-5 ; Gtlnth. Fische des Neckars, p. 113. 

 Salmo alpinus, Block, iii. p. 158, taf. 104. 



saxatilis, Schrank, Faun. Boic. i. p. 320. 



Salar ausonii, Heckel, Sitzf/sber. Acad. Wiss. Wien, 1852, viii. p. 354, 



taf. 8 ; Heckel iif Kner, Siissicasserf. p. 248. 

 Trutta fario, Sishold, Siissicasserf. p. 319. 

 Anatomi/: Agass. & Vogt, Mem. Soc. Sc. Nat. Neuchatel, iii. ; Kner, 



Sitzgsber. Acad. Wiss. Wien, 1851, vi. p. 243, & 1852,\'iii. p. 204. 



Russian specimens. 

 Salmo fario, Pall. Zoogr. Ross.-As. iii. p. 348. 



British specimens. 



The Common River-Trout. 



Trutta fluviatilis, Williigkhi/, p. 199 (p. 193, two varieties are men- 

 tioned by Johnson, but in very indistinct terms). 



Trout, Borlase, Cornwall, p. 263", t. 2(3. f. 1 ; Pennant, Brit. Zool. iii. 

 p. 260, pi. 59, & edit. 1812, iii. p. .399, pi. 70. 



Salmo fario, Turt. Brit. Faun. p. 103 ; Donov. Brit. Fish. iv. pi. 85 ; 

 Fkm. Brit. Anim. p. 181; Richards. Faun. Bor.-Amer. Pise. p. 

 144, pi. 92. fig. 3 A & B ; Jenpis, Man. p. 424 ; Yarr. Brit. Fish. 

 2ud edit. ii. p. 85, & 3rd edit. i. p. 261. 



Sabuo cornubiensis, IFaZJ. Artedi, iii. p. 65; Bl. Schn. p. 421. 



French specimens. 



Salar Gallorum Trutta, Bellmi. p. 280. 



Trutta fluviatilis. Rondel, ii. p. 169. 



Salmo fario, Selys-LongcJiamps, Faune Beige, p. 221. 



Salar ausonii, C^(v. ^ Val. xxi. p. 319, pi. 618. 



D. 13 (-14). A. 10-11. P. 13. V. 9. L. lat. 120. L. transv. 

 26/30. Case. pyl. 38-47 (-51). Yert. 57*, 58. 



Attaining to a length of thirty inches ; female mature at a length 

 of eight inches. 



Head weU proportioned in its shape ; body rather stout. The 

 posterior point of junction of operculum and suboperculum is mid- 

 way between the upper end of the gill-opening and the lower anterior 

 angle of the suboperculum. Praeoperculum with a not very indistinct 

 but very obhquc lower limb. Snout rather produced in the male ; 

 the lower jaw having a hook in front in very old examples only. 

 MaxiUaiy much longer than the snout, very strong and dilated (see 

 p. 6) ; it extends to below the hinder margin of the orbit already 

 in specimens of eight or nine inches in length. Dentition strong. 

 The head of the vomer is triangular, much broader than long, with 

 * Fifty-six, if the last rudimentary caudal vertebra be not counted. 



